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linux-headers-5.4.0-216
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linux
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atmel-mci.h
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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_ATMEL_MCI_H #define __LINUX_ATMEL_MCI_H #include <linux/types.h> #include <linux/dmaengine.h> #define ATMCI_MAX_NR_SLOTS 2 /** * struct mci_slot_pdata - board-specific per-slot configuration * @bus_width: Number of data lines wired up the slot * @detect_pin: GPIO pin wired to the card detect switch * @wp_pin: GPIO pin wired to the write protect sensor * @detect_is_active_high: The state of the detect pin when it is active * @non_removable: The slot is not removable, only detect once * * If a given slot is not present on the board, @bus_width should be * set to 0. The other fields are ignored in this case. * * Any pins that aren't available should be set to a negative value. * * Note that support for multiple slots is experimental -- some cards * might get upset if we don't get the clock management exactly right. * But in most cases, it should work just fine. */ struct mci_slot_pdata { unsigned int bus_width; int detect_pin; int wp_pin; bool detect_is_active_high; bool non_removable; }; /** * struct mci_platform_data - board-specific MMC/SDcard configuration * @dma_slave: DMA slave interface to use in data transfers. * @slot: Per-slot configuration data. */ struct mci_platform_data { void *dma_slave; dma_filter_fn dma_filter; struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS]; }; #endif /* __LINUX_ATMEL_MCI_H */